News reports say peace talks between the two countries with no agreement reached

题干所提供的语义为：peace talks“失败，破裂”，with no agreement reached。

    选项中四个短语的含义分别为：

    breakdown: to come to an unsuccessful end

    breakout: 1)   (of an undesirablecondition) to begin suddenly and often violently

    2) tosuddenly become covered

    3) to escape(from)

    breakin: 1) to enter a building by force

    2) tointerrupt

    3) tomake (a person or animal) used to something new

    breakup: 1) to (cause to) become separated into smaller pieces

    2) tocome or bring to an end, esp. by separating

    3) tostop being together; separate or go in different directions

    显然只有选项A能够满足本题语境与语义的需要。

本题所提供的四个选项时态完全一样，选择答案时主要根据题干中句子的意思和四个短语动词的词义来考虑。